./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/termination.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:13:18,876 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:13:18,937 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2024-10-12 00:13:18,944 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:13:18,945 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:13:18,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:13:18,981 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:13:18,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:13:18,982 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:13:19,001 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:13:19,002 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:13:19,004 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:13:19,004 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:13:19,004 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-12 00:13:19,004 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-12 00:13:19,005 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-12 00:13:19,005 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-12 00:13:19,005 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-12 00:13:19,005 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-12 00:13:19,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:13:19,007 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-12 00:13:19,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:13:19,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:13:19,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-12 00:13:19,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-12 00:13:19,009 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-12 00:13:19,009 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:13:19,009 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:13:19,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:13:19,010 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-12 00:13:19,010 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:13:19,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:13:19,011 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:13:19,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:13:19,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:13:19,012 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-12 00:13:19,012 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06d48bd39a18f705c3286a70a8cdcced2226e3b2a16c7a38c85f5398d4bcad34 [2024-10-12 00:13:19,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:13:19,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:13:19,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:13:19,292 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:13:19,293 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:13:19,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2024-10-12 00:13:20,771 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:13:20,941 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:13:20,942 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/GopanReps-CAV2006-Fig1a.c [2024-10-12 00:13:20,947 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/07b44048c/8ddb6d17dc7f4a6a987eb276ad254638/FLAG821724924 [2024-10-12 00:13:21,342 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/07b44048c/8ddb6d17dc7f4a6a987eb276ad254638 [2024-10-12 00:13:21,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:13:21,356 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:13:21,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:13:21,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:13:21,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:13:21,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d3bd8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21, skipping insertion in model container [2024-10-12 00:13:21,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,380 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:13:21,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:13:21,562 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:13:21,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:13:21,589 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:13:21,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21 WrapperNode [2024-10-12 00:13:21,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:13:21,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:13:21,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:13:21,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:13:21,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,617 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2024-10-12 00:13:21,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:13:21,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:13:21,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:13:21,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:13:21,628 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,629 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,636 INFO L175 MemorySlicer]: No memory access in input program. [2024-10-12 00:13:21,636 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,639 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,645 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:13:21,646 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:13:21,646 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:13:21,646 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:13:21,647 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (1/1) ... [2024-10-12 00:13:21,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:21,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:21,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:21,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-12 00:13:21,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:13:21,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:13:21,806 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:13:21,809 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:13:21,877 INFO L? ?]: Removed 3 outVars from TransFormulas that were not future-live. [2024-10-12 00:13:21,877 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:13:21,895 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:13:21,899 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-12 00:13:21,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:13:21 BoogieIcfgContainer [2024-10-12 00:13:21,900 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:13:21,902 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-12 00:13:21,902 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-12 00:13:21,907 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-12 00:13:21,908 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:13:21,908 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.10 12:13:21" (1/3) ... [2024-10-12 00:13:21,909 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2733b3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 12:13:21, skipping insertion in model container [2024-10-12 00:13:21,910 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:13:21,910 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:13:21" (2/3) ... [2024-10-12 00:13:21,910 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2733b3bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.10 12:13:21, skipping insertion in model container [2024-10-12 00:13:21,910 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-12 00:13:21,911 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:13:21" (3/3) ... [2024-10-12 00:13:21,914 INFO L332 chiAutomizerObserver]: Analyzing ICFG GopanReps-CAV2006-Fig1a.c [2024-10-12 00:13:21,977 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-12 00:13:21,978 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-12 00:13:21,978 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-12 00:13:21,978 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-12 00:13:21,978 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-12 00:13:21,979 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-12 00:13:21,979 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-12 00:13:21,979 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-12 00:13:21,983 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:21,997 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-12 00:13:21,998 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:13:21,998 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:13:22,003 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-12 00:13:22,003 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:13:22,004 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-12 00:13:22,004 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:22,005 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-12 00:13:22,005 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:13:22,005 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:13:22,005 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-12 00:13:22,005 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:13:22,011 INFO L745 eck$LassoCheckResult]: Stem: 7#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 5#L18-2true [2024-10-12 00:13:22,011 INFO L747 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~y~0#1 >= 0); 9#L19true assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 2#L19-2true main_~x~0#1 := 1 + main_~x~0#1; 5#L18-2true [2024-10-12 00:13:22,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:22,017 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-12 00:13:22,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:22,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530806420] [2024-10-12 00:13:22,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:22,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:22,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:22,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:22,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:22,123 INFO L85 PathProgramCache]: Analyzing trace with hash 40876, now seen corresponding path program 1 times [2024-10-12 00:13:22,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:22,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789135583] [2024-10-12 00:13:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:22,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:22,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:22,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:22,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:22,154 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2024-10-12 00:13:22,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:22,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112050290] [2024-10-12 00:13:22,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:22,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:22,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:13:22,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112050290] [2024-10-12 00:13:22,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112050290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:13:22,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:13:22,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:13:22,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195698040] [2024-10-12 00:13:22,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:13:22,301 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:22,302 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:22,302 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:22,302 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:22,302 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:13:22,303 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,303 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:22,303 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:22,303 INFO L132 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2024-10-12 00:13:22,303 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:22,303 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:22,318 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,330 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,342 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,350 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,444 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:22,445 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:13:22,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2024-10-12 00:13:22,453 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:22,454 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:22,479 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:13:22,479 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:13:22,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2024-10-12 00:13:22,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,497 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2024-10-12 00:13:22,499 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:22,499 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:22,525 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:13:22,525 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:13:22,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:22,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,542 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2024-10-12 00:13:22,544 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:22,544 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:22,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2024-10-12 00:13:22,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,571 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2024-10-12 00:13:22,573 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:13:22,573 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:22,605 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:13:22,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:22,610 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:22,611 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:22,611 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:22,611 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:22,611 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:13:22,611 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,611 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:22,611 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:22,611 INFO L132 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration1_Loop [2024-10-12 00:13:22,611 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:22,612 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:22,614 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,619 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,625 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,635 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:22,708 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:22,713 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:13:22,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,717 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2024-10-12 00:13:22,720 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:13:22,732 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:22,732 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:22,733 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:22,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:22,738 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-12 00:13:22,738 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-12 00:13:22,744 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:13:22,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:22,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,762 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2024-10-12 00:13:22,764 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:13:22,774 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:22,775 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:22,775 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:22,775 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:22,778 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-12 00:13:22,778 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-12 00:13:22,783 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:13:22,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2024-10-12 00:13:22,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,798 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2024-10-12 00:13:22,800 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:13:22,810 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:22,811 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:13:22,811 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:22,811 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:22,811 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:22,813 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:13:22,813 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:13:22,817 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:13:22,819 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:13:22,819 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:13:22,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:22,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:22,843 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:22,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2024-10-12 00:13:22,845 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:13:22,845 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:13:22,845 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:13:22,845 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2024-10-12 00:13:22,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:22,860 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:13:22,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:22,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 00:13:22,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:22,916 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:13:22,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:23,023 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2024-10-12 00:13:23,025 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:23,070 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 28 transitions. Complement of second has 8 states. [2024-10-12 00:13:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-10-12 00:13:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2024-10-12 00:13:23,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 2 letters. Loop has 3 letters. [2024-10-12 00:13:23,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:23,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2024-10-12 00:13:23,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:23,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 2 letters. Loop has 6 letters. [2024-10-12 00:13:23,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:23,083 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2024-10-12 00:13:23,085 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-12 00:13:23,089 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 12 states and 15 transitions. [2024-10-12 00:13:23,090 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2024-10-12 00:13:23,090 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2024-10-12 00:13:23,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 15 transitions. [2024-10-12 00:13:23,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:13:23,091 INFO L218 hiAutomatonCegarLoop]: Abstraction has 12 states and 15 transitions. [2024-10-12 00:13:23,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 15 transitions. [2024-10-12 00:13:23,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2024-10-12 00:13:23,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-10-12 00:13:23,124 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-10-12 00:13:23,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:13:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-12 00:13:23,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-12 00:13:23,127 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:23,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:13:23,137 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2024-10-12 00:13:23,137 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2024-10-12 00:13:23,138 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-12 00:13:23,138 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 8 states and 9 transitions. [2024-10-12 00:13:23,138 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2024-10-12 00:13:23,138 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2024-10-12 00:13:23,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2024-10-12 00:13:23,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-12 00:13:23,138 INFO L218 hiAutomatonCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-10-12 00:13:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2024-10-12 00:13:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2024-10-12 00:13:23,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2024-10-12 00:13:23,139 INFO L240 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-10-12 00:13:23,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-12 00:13:23,140 INFO L425 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2024-10-12 00:13:23,140 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-12 00:13:23,141 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2024-10-12 00:13:23,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-12 00:13:23,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:13:23,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:13:23,141 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2024-10-12 00:13:23,141 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:13:23,142 INFO L745 eck$LassoCheckResult]: Stem: 97#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 98#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 99#L18-2 assume !!(main_~y~0#1 >= 0); 100#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 94#L19-2 [2024-10-12 00:13:23,142 INFO L747 eck$LassoCheckResult]: Loop: 94#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 95#L18-2 assume !!(main_~y~0#1 >= 0); 96#L19 assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 94#L19-2 [2024-10-12 00:13:23,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:23,142 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2024-10-12 00:13:23,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:23,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203940973] [2024-10-12 00:13:23,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:23,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:23,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:23,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2024-10-12 00:13:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:23,170 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:23,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:23,175 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 2 times [2024-10-12 00:13:23,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:23,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107089688] [2024-10-12 00:13:23,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:23,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:23,188 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:23,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:23,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:23,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1810662097, now seen corresponding path program 1 times [2024-10-12 00:13:23,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:23,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016324321] [2024-10-12 00:13:23,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:23,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:23,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:23,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:13:23,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016324321] [2024-10-12 00:13:23,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016324321] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:13:23,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359007821] [2024-10-12 00:13:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:23,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:13:23,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,327 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-12 00:13:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:23,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-12 00:13:23,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:23,382 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:13:23,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:23,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359007821] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:13:23,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:13:23,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-12 00:13:23,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871434177] [2024-10-12 00:13:23,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:13:23,439 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:23,439 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:23,440 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:23,440 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:23,440 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:13:23,440 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,440 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:23,440 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:23,440 INFO L132 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2024-10-12 00:13:23,440 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:23,440 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:23,441 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,444 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,452 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,457 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,509 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:23,510 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:13:23,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,513 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2024-10-12 00:13:23,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:23,516 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:23,539 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:13:23,539 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:13:23,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2024-10-12 00:13:23,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,558 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2024-10-12 00:13:23,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:23,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:23,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2024-10-12 00:13:23,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,594 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2024-10-12 00:13:23,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:13:23,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:23,655 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:13:23,655 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=50} Honda state: {ULTIMATE.start_main_~x~0#1=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [1, 6, 7] Nus: [1, 0] [2024-10-12 00:13:23,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2024-10-12 00:13:23,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,673 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2024-10-12 00:13:23,676 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:23,676 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:23,700 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:13:23,700 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2024-10-12 00:13:23,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:23,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,714 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2024-10-12 00:13:23,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:23,716 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:23,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:23,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,740 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2024-10-12 00:13:23,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:13:23,742 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:23,775 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:13:23,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2024-10-12 00:13:23,781 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:23,782 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:23,782 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:23,782 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:23,782 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:13:23,782 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,782 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:23,782 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:23,782 INFO L132 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration2_Loop [2024-10-12 00:13:23,782 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:23,782 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:23,783 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,790 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,798 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,806 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:23,861 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:23,861 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:13:23,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,864 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2024-10-12 00:13:23,866 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:13:23,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:23,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:23,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:23,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:23,882 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2024-10-12 00:13:23,882 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2024-10-12 00:13:23,885 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:13:23,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2024-10-12 00:13:23,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,904 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2024-10-12 00:13:23,906 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:13:23,917 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:23,917 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:13:23,917 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:23,918 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:23,918 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:23,919 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:13:23,919 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:13:23,922 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:13:23,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:23,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,934 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2024-10-12 00:13:23,936 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:13:23,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:23,946 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:13:23,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:23,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:23,947 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:23,947 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:13:23,947 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:13:23,949 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:13:23,951 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:13:23,951 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:13:23,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:23,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:23,953 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:23,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2024-10-12 00:13:23,955 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:13:23,956 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:13:23,956 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:13:23,956 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2024-10-12 00:13:23,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2024-10-12 00:13:23,972 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:13:23,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:23,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 00:13:23,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:24,002 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:13:24,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:24,022 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-12 00:13:24,022 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:24,041 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 8 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 16 transitions. Complement of second has 7 states. [2024-10-12 00:13:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-10-12 00:13:24,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:24,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2024-10-12 00:13:24,043 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 3 letters. [2024-10-12 00:13:24,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:24,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 7 letters. Loop has 3 letters. [2024-10-12 00:13:24,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:24,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 6 letters. [2024-10-12 00:13:24,044 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:24,044 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 16 transitions. [2024-10-12 00:13:24,045 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-12 00:13:24,045 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 16 transitions. [2024-10-12 00:13:24,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2024-10-12 00:13:24,046 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2024-10-12 00:13:24,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 16 transitions. [2024-10-12 00:13:24,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:13:24,046 INFO L218 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-10-12 00:13:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 16 transitions. [2024-10-12 00:13:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-10-12 00:13:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:24,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2024-10-12 00:13:24,047 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 16 transitions. [2024-10-12 00:13:24,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:13:24,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:13:24,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:13:24,048 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:24,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:13:24,071 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2024-10-12 00:13:24,072 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 20 transitions. [2024-10-12 00:13:24,072 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2024-10-12 00:13:24,073 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 17 states and 18 transitions. [2024-10-12 00:13:24,073 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2024-10-12 00:13:24,073 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2024-10-12 00:13:24,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 18 transitions. [2024-10-12 00:13:24,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-12 00:13:24,074 INFO L218 hiAutomatonCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-10-12 00:13:24,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 18 transitions. [2024-10-12 00:13:24,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2024-10-12 00:13:24,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.0625) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:24,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-10-12 00:13:24,076 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-10-12 00:13:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:13:24,077 INFO L425 stractBuchiCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-10-12 00:13:24,077 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-12 00:13:24,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 17 transitions. [2024-10-12 00:13:24,077 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2024-10-12 00:13:24,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:13:24,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:13:24,078 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2024-10-12 00:13:24,078 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:13:24,078 INFO L745 eck$LassoCheckResult]: Stem: 234#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 235#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 232#L18-2 assume !!(main_~y~0#1 >= 0); 233#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 230#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 231#L18-2 assume !!(main_~y~0#1 >= 0); 245#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 244#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 243#L18-2 assume !!(main_~y~0#1 >= 0); 242#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 241#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 240#L18-2 assume !!(main_~y~0#1 >= 0); 239#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 237#L19-2 [2024-10-12 00:13:24,079 INFO L747 eck$LassoCheckResult]: Loop: 237#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 238#L18-2 assume !!(main_~y~0#1 >= 0); 236#L19 assume !(main_~x~0#1 <= 50);main_~y~0#1 := main_~y~0#1 - 1; 237#L19-2 [2024-10-12 00:13:24,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:24,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1702507665, now seen corresponding path program 1 times [2024-10-12 00:13:24,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:24,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721620234] [2024-10-12 00:13:24,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:24,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:24,096 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:24,111 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:24,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:24,116 INFO L85 PathProgramCache]: Analyzing trace with hash 47446, now seen corresponding path program 3 times [2024-10-12 00:13:24,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:24,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163039722] [2024-10-12 00:13:24,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:24,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:24,122 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:24,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:24,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:24,125 INFO L85 PathProgramCache]: Analyzing trace with hash -137031896, now seen corresponding path program 2 times [2024-10-12 00:13:24,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:24,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889657624] [2024-10-12 00:13:24,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:24,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:24,223 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:24,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:13:24,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889657624] [2024-10-12 00:13:24,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889657624] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-12 00:13:24,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061168738] [2024-10-12 00:13:24,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-12 00:13:24,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-12 00:13:24,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:24,227 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-12 00:13:24,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-10-12 00:13:24,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-12 00:13:24,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-12 00:13:24,270 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-12 00:13:24,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:24,310 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:24,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-12 00:13:24,388 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:24,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061168738] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-12 00:13:24,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-12 00:13:24,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-10-12 00:13:24,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121381947] [2024-10-12 00:13:24,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-12 00:13:24,415 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:24,415 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:24,415 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:24,415 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:24,415 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:13:24,415 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:24,415 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:24,415 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:24,416 INFO L132 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2024-10-12 00:13:24,416 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:24,416 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:24,416 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:24,428 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:24,433 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:24,436 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:24,476 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:24,476 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:13:24,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:24,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:24,477 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:24,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2024-10-12 00:13:24,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:24,479 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:24,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:24,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:24,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:24,510 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:24,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2024-10-12 00:13:24,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:13:24,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:24,559 INFO L398 LassoAnalysis]: Proved nontermination for one component. [2024-10-12 00:13:24,560 INFO L401 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=50} Honda state: {ULTIMATE.start_main_~x~0#1=50} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=1}, {ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [1, 6, 7] Nus: [1, 0] [2024-10-12 00:13:24,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:24,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:24,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:24,572 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:24,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2024-10-12 00:13:24,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:24,574 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:24,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:24,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:24,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:24,602 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:24,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2024-10-12 00:13:24,603 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:13:24,603 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:24,636 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:13:24,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:24,641 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:24,641 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:24,641 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:24,641 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:24,641 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:13:24,641 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:24,641 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:24,641 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:24,641 INFO L132 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration3_Loop [2024-10-12 00:13:24,641 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:24,641 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:24,643 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:24,649 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:24,654 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:24,656 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:24,700 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:24,701 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:13:24,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:24,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:24,703 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:24,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2024-10-12 00:13:24,706 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:13:24,717 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:24,718 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:13:24,718 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:24,718 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:24,718 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:24,719 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:13:24,719 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:13:24,721 INFO L488 LassoAnalysis]: Proving termination failed for this template and these settings. [2024-10-12 00:13:24,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:24,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:24,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:24,737 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:24,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2024-10-12 00:13:24,743 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:13:24,757 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:24,757 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:13:24,757 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:24,757 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:24,757 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:24,761 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:13:24,761 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:13:24,765 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:13:24,768 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:13:24,768 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:13:24,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:24,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:24,770 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:24,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2024-10-12 00:13:24,773 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:13:24,773 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:13:24,773 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:13:24,773 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 2*ULTIMATE.start_main_~y~0#1 + 1 Supporting invariants [] [2024-10-12 00:13:24,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Ended with exit code 0 [2024-10-12 00:13:24,789 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:13:24,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:24,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 00:13:24,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:24,845 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:13:24,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:24,861 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-12 00:13:24,861 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:24,881 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 19 transitions. Complement of second has 7 states. [2024-10-12 00:13:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-10-12 00:13:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:24,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2024-10-12 00:13:24,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-12 00:13:24,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:24,885 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:13:24,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:24,910 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 00:13:24,911 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:24,935 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:13:24,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:24,952 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-12 00:13:24,952 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:24,963 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 18 states and 19 transitions. Complement of second has 7 states. [2024-10-12 00:13:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-10-12 00:13:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2024-10-12 00:13:24,964 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-12 00:13:24,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:24,965 INFO L682 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2024-10-12 00:13:24,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:24,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 00:13:24,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:25,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:25,004 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:13:25,005 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:25,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:25,019 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-12 00:13:25,019 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:25,036 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 17 transitions. cyclomatic complexity: 2. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 27 transitions. Complement of second has 6 states. [2024-10-12 00:13:25,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-10-12 00:13:25,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:25,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2024-10-12 00:13:25,037 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 13 letters. Loop has 3 letters. [2024-10-12 00:13:25,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:25,038 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 16 letters. Loop has 3 letters. [2024-10-12 00:13:25,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:25,038 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 13 letters. Loop has 6 letters. [2024-10-12 00:13:25,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:25,038 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 27 transitions. [2024-10-12 00:13:25,039 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-12 00:13:25,039 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 21 transitions. [2024-10-12 00:13:25,040 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2024-10-12 00:13:25,040 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2024-10-12 00:13:25,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 21 transitions. [2024-10-12 00:13:25,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:13:25,040 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 21 transitions. [2024-10-12 00:13:25,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 21 transitions. [2024-10-12 00:13:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2024-10-12 00:13:25,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:25,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2024-10-12 00:13:25,042 INFO L240 hiAutomatonCegarLoop]: Abstraction has 17 states and 19 transitions. [2024-10-12 00:13:25,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:13:25,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-12 00:13:25,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2024-10-12 00:13:25,043 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:25,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-12 00:13:25,079 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2024-10-12 00:13:25,079 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 51 transitions. [2024-10-12 00:13:25,080 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-12 00:13:25,081 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 37 states and 39 transitions. [2024-10-12 00:13:25,081 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2024-10-12 00:13:25,081 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2024-10-12 00:13:25,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 39 transitions. [2024-10-12 00:13:25,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2024-10-12 00:13:25,081 INFO L218 hiAutomatonCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-10-12 00:13:25,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 39 transitions. [2024-10-12 00:13:25,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-10-12 00:13:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:25,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2024-10-12 00:13:25,084 INFO L240 hiAutomatonCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-10-12 00:13:25,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-12 00:13:25,085 INFO L425 stractBuchiCegarLoop]: Abstraction has 35 states and 37 transitions. [2024-10-12 00:13:25,085 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-12 00:13:25,085 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 37 transitions. [2024-10-12 00:13:25,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2024-10-12 00:13:25,086 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-12 00:13:25,086 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-12 00:13:25,087 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [9, 9, 9, 1, 1] [2024-10-12 00:13:25,087 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2024-10-12 00:13:25,087 INFO L745 eck$LassoCheckResult]: Stem: 662#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 663#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := 0;main_~y~0#1 := 0; 665#L18-2 assume !!(main_~y~0#1 >= 0); 689#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 655#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 656#L18-2 assume !!(main_~y~0#1 >= 0); 660#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 664#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 688#L18-2 assume !!(main_~y~0#1 >= 0); 687#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 686#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 685#L18-2 assume !!(main_~y~0#1 >= 0); 684#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 683#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 682#L18-2 assume !!(main_~y~0#1 >= 0); 681#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 680#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 679#L18-2 assume !!(main_~y~0#1 >= 0); 678#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 677#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 676#L18-2 assume !!(main_~y~0#1 >= 0); 675#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 674#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 673#L18-2 assume !!(main_~y~0#1 >= 0); 672#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 671#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 670#L18-2 assume !!(main_~y~0#1 >= 0); 669#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 668#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 659#L18-2 [2024-10-12 00:13:25,087 INFO L747 eck$LassoCheckResult]: Loop: 659#L18-2 assume !!(main_~y~0#1 >= 0); 667#L19 assume main_~x~0#1 <= 50;main_~y~0#1 := 1 + main_~y~0#1; 666#L19-2 main_~x~0#1 := 1 + main_~x~0#1; 659#L18-2 [2024-10-12 00:13:25,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash -191897876, now seen corresponding path program 2 times [2024-10-12 00:13:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127543160] [2024-10-12 00:13:25,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:25,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:25,115 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:25,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:25,116 INFO L85 PathProgramCache]: Analyzing trace with hash 40814, now seen corresponding path program 1 times [2024-10-12 00:13:25,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:25,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669589041] [2024-10-12 00:13:25,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:25,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:25,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:25,137 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:25,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:25,138 INFO L85 PathProgramCache]: Analyzing trace with hash -228141917, now seen corresponding path program 3 times [2024-10-12 00:13:25,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:13:25,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985940442] [2024-10-12 00:13:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:13:25,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:13:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:25,160 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-12 00:13:25,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-12 00:13:25,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-12 00:13:25,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2024-10-12 00:13:25,220 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:25,220 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:25,221 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:25,221 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:25,221 INFO L128 ssoRankerPreferences]: Use exernal solver: true [2024-10-12 00:13:25,221 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:25,221 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:25,221 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:25,221 INFO L132 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration4_Loop [2024-10-12 00:13:25,221 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:25,221 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:25,222 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:25,228 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:25,233 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:25,235 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:25,273 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:25,274 INFO L365 LassoAnalysis]: Checking for nontermination... [2024-10-12 00:13:25,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:25,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:25,288 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:25,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2024-10-12 00:13:25,290 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2024-10-12 00:13:25,290 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:25,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:25,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:25,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:25,331 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:25,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2024-10-12 00:13:25,333 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2024-10-12 00:13:25,333 INFO L160 nArgumentSynthesizer]: Using integer mode. [2024-10-12 00:13:25,359 INFO L405 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2024-10-12 00:13:25,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:25,363 INFO L204 LassoAnalysis]: Preferences: [2024-10-12 00:13:25,363 INFO L125 ssoRankerPreferences]: Compute integeral hull: false [2024-10-12 00:13:25,363 INFO L126 ssoRankerPreferences]: Enable LassoPartitioneer: true [2024-10-12 00:13:25,364 INFO L127 ssoRankerPreferences]: Term annotations enabled: false [2024-10-12 00:13:25,364 INFO L128 ssoRankerPreferences]: Use exernal solver: false [2024-10-12 00:13:25,364 INFO L129 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:25,364 INFO L130 ssoRankerPreferences]: Dump SMT script to file: false [2024-10-12 00:13:25,364 INFO L131 ssoRankerPreferences]: Path of dumped script: [2024-10-12 00:13:25,364 INFO L132 ssoRankerPreferences]: Filename of dumped script: GopanReps-CAV2006-Fig1a.c_Iteration4_Loop [2024-10-12 00:13:25,364 INFO L133 ssoRankerPreferences]: MapElimAlgo: Frank [2024-10-12 00:13:25,364 INFO L241 LassoAnalysis]: Starting lasso preprocessing... [2024-10-12 00:13:25,365 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:25,371 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:25,375 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:25,378 INFO L118 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2024-10-12 00:13:25,416 INFO L259 LassoAnalysis]: Preprocessing complete. [2024-10-12 00:13:25,416 INFO L451 LassoAnalysis]: Using template 'affine'. [2024-10-12 00:13:25,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:25,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:25,418 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:25,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2024-10-12 00:13:25,420 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2024-10-12 00:13:25,429 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2024-10-12 00:13:25,429 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2024-10-12 00:13:25,429 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2024-10-12 00:13:25,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2024-10-12 00:13:25,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2024-10-12 00:13:25,430 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2024-10-12 00:13:25,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2024-10-12 00:13:25,444 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2024-10-12 00:13:25,447 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2024-10-12 00:13:25,447 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2024-10-12 00:13:25,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-12 00:13:25,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:13:25,449 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-12 00:13:25,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2024-10-12 00:13:25,450 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2024-10-12 00:13:25,450 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2024-10-12 00:13:25,450 INFO L474 LassoAnalysis]: Proved termination. [2024-10-12 00:13:25,450 INFO L476 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = -2*ULTIMATE.start_main_~x~0#1 + 101 Supporting invariants [] [2024-10-12 00:13:25,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:25,461 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2024-10-12 00:13:25,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:13:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:25,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-12 00:13:25,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:13:25,535 WARN L253 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-12 00:13:25,535 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-12 00:13:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:13:25,548 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2024-10-12 00:13:25,549 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:25,570 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 37 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 61 states and 65 transitions. Complement of second has 6 states. [2024-10-12 00:13:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2024-10-12 00:13:25,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:13:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2024-10-12 00:13:25,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 3 letters. [2024-10-12 00:13:25,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:25,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 32 letters. Loop has 3 letters. [2024-10-12 00:13:25,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:25,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 29 letters. Loop has 6 letters. [2024-10-12 00:13:25,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2024-10-12 00:13:25,573 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 65 transitions. [2024-10-12 00:13:25,574 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 00:13:25,574 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 0 states and 0 transitions. [2024-10-12 00:13:25,574 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2024-10-12 00:13:25,574 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2024-10-12 00:13:25,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2024-10-12 00:13:25,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-12 00:13:25,575 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:13:25,575 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:13:25,575 INFO L425 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-12 00:13:25,575 INFO L332 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-10-12 00:13:25,575 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2024-10-12 00:13:25,575 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2024-10-12 00:13:25,575 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2024-10-12 00:13:25,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.10 12:13:25 BoogieIcfgContainer [2024-10-12 00:13:25,589 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-12 00:13:25,590 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-12 00:13:25,590 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-12 00:13:25,590 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-12 00:13:25,591 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:13:21" (3/4) ... [2024-10-12 00:13:25,592 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-12 00:13:25,593 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-12 00:13:25,595 INFO L158 Benchmark]: Toolchain (without parser) took 4237.69ms. Allocated memory is still 213.9MB. Free memory was 184.0MB in the beginning and 150.6MB in the end (delta: 33.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-10-12 00:13:25,595 INFO L158 Benchmark]: CDTParser took 0.54ms. Allocated memory is still 134.2MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:13:25,595 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.60ms. Allocated memory is still 213.9MB. Free memory was 183.8MB in the beginning and 180.3MB in the end (delta: 3.5MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-10-12 00:13:25,595 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.20ms. Allocated memory is still 213.9MB. Free memory was 180.3MB in the beginning and 179.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-12 00:13:25,596 INFO L158 Benchmark]: Boogie Preprocessor took 27.54ms. Allocated memory is still 213.9MB. Free memory was 178.2MB in the beginning and 177.3MB in the end (delta: 953.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:13:25,598 INFO L158 Benchmark]: RCFGBuilder took 254.33ms. Allocated memory is still 213.9MB. Free memory was 177.3MB in the beginning and 167.7MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-10-12 00:13:25,598 INFO L158 Benchmark]: BuchiAutomizer took 3687.47ms. Allocated memory is still 213.9MB. Free memory was 167.7MB in the beginning and 150.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2024-10-12 00:13:25,598 INFO L158 Benchmark]: Witness Printer took 3.87ms. Allocated memory is still 213.9MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-12 00:13:25,600 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54ms. Allocated memory is still 134.2MB. Free memory is still 99.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.60ms. Allocated memory is still 213.9MB. Free memory was 183.8MB in the beginning and 180.3MB in the end (delta: 3.5MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.20ms. Allocated memory is still 213.9MB. Free memory was 180.3MB in the beginning and 179.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.54ms. Allocated memory is still 213.9MB. Free memory was 178.2MB in the beginning and 177.3MB in the end (delta: 953.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 254.33ms. Allocated memory is still 213.9MB. Free memory was 177.3MB in the beginning and 167.7MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 3687.47ms. Allocated memory is still 213.9MB. Free memory was 167.7MB in the beginning and 150.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * Witness Printer took 3.87ms. Allocated memory is still 213.9MB. Free memory is still 150.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function (((long) 2 * y) + 1) and consists of 5 locations. One deterministic module has affine ranking function (((long) 2 * y) + 1) and consists of 4 locations. One deterministic module has affine ranking function (101 + ((long) -2 * x)) and consists of 4 locations. One nondeterministic module has affine ranking function (((long) 2 * y) + 1) and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 5 iterations. TraceHistogramMax:9. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 51 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 43 mSDtfsCounter, 84 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT3 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 29ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2024-10-12 00:13:25,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:25,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-10-12 00:13:26,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-12 00:13:26,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE